Note 11 - Summary of Share-based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cost of Sales [Member]
Allocated Share-based Compensation Expense	$ 412	$ 337	$ 662
Selling, General and Administrative Expenses [Member]
Allocated Share-based Compensation Expense	1,362	2,609	2,398
Allocated Share-based Compensation Expense	$ 1,774	$ 2,946	$ 3,060